31106809436 has 6 divisors (see below), whose sum is σ = 54436916520. Its totient is φ = 15553404716.

The previous prime is 31106809339. The next prime is 31106809441. The reversal of 31106809436 is 63490860113.

It is a junction number, because it is equal to n+sod(n) for n = 31106809393 and 31106809402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3888351176 + ... + 3888351183.

It is an arithmetic number, because the mean of its divisors is an integer number (9072819420).

Almost surely, 2^31106809436 is an apocalyptic number.

It is an amenable number.

31106809436 is a deficient number, since it is larger than the sum of its proper divisors (23330107084).

31106809436 is a wasteful number, since it uses less digits than its factorization.

31106809436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7776702363 (or 7776702361 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 31106809436 in words is "thirty-one billion, one hundred six million, eight hundred nine thousand, four hundred thirty-six".